Fallfish, Semotilus corporalis

DISTRIBUTION:
DESCRIPTION: The fallfish has a similar body shape as the creek chub, but is more
laterally compressed and has a more pointed head. Its back is dark olive, brown
to black in colour and its sides are silvery to a white belly. The scales are large
with 43 – 50 along the lateral line. Young fallfish generally have distinct mid-lateral
band. They also have a dark pigmentation (cresent shaped) on the anterior edge
of its scales. The average length is around 5 inches, but the fallfish can grow
between 10 and 15 inches.
BIOLOGY: The fallfish are commonly found in pools and runs of rivers, but are
also found in lakes. Food consist mostly of aquatic insects, plankton, and other
fishes. The fallfish spawn in the spring. Like creek chub males the male fallfish takes
on a rosy colouration and develops tubercles on its head. The male creates a
depression for egg deposition by removing pebbles with its mouth. The fertilized, non-
adhesive eggs are then covered with gravel. Commonly referred to as “chub” by anglers, fallfish
are rarely kept for food. They are preyed upon by fish-eating birds and larger fish.
SPAWNING MALE

